当前位置: X-MOL 学术J. Fourier Anal. Appl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The Calderón–Zygmund Theorem with an $$L^1$$ L 1 Mean Hörmander Condition
Journal of Fourier Analysis and Applications ( IF 1.2 ) Pub Date : 2021-03-02 , DOI: 10.1007/s00041-021-09810-9
Soichiro Suzuki

In 2019, Grafakos and Stockdale introduced an \(L^q\) mean Hörmander condition and proved a “limited-range” Calderón–Zygmund theorem. Comparing their theorem with the classical one, it requires weaker assumptions and implies the \(L^p\) boundedness for the “limited-range” instead of \(1< p < \infty \). However, in this paper, we show that the \(L^q\) mean Hörmander condition is actually enough to obtain the \(L^p\) boundedness for all \(1< p < \infty \) even in the worst case \(q=1\). We use a similar method to that used by Fefferman (Acta Math 124:9–36, 1970): form the Calderón–Zygmund decomposition with the bounded overlap property and approximate the bad part. Also we give a criterion of the \(L^2\) boundedness for convolution type singular integral operators under the \(L^1\) mean Hörmander condition.



中文翻译:

具有$ L ^ 1 $$ L 1的Hörmander条件的Calderón–Zygmund定理

在2019年,格拉法科斯(Grafakos)和斯托克代尔 Stockdale)引入了Hörmander平均条件(L ^ q \),并证明了“有限范围”卡尔德龙-齐格蒙德定理。将其定理与经典定理进行比较,它需要较弱的假设,并暗示了“有限范围”的\(L ^ p \)有界性,而不是\(1 <p <\ infty \)。但是,在本文中,我们证明即使在最坏的情况下,\(L ^ q \)平均Hörmander条件实际上足以获得所有\(1 <p <\ infty \)\(L ^ p \)有界情况\(q = 1 \)。我们使用的方法与费弗曼(Fefferman,Acta Math 124:9–36,1970)使用的方法类似:形成具有有界重叠属性的Calderón-Zygmund分解并近似不良部分。此外,我们得到的标准\(L ^ 2 \)有界卷积型奇异积分算下\(L ^ 1 \)平均Hörmander条件。

更新日期:2021-03-02
down
wechat
bug